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Finding the Fourth Proportional to 142,599.46, 214,109.46 and 79,542.78

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Solution

The fourth proportional to 142,599.46, 214,109.46 and 79,542.78 is: 119,431.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,599.46 : 214,109.46 = 79,542.78 : x
  2. Step 2: Convert to fraction form
    142,599.46/214,109.46 = 79,542.78/x
  3. Step 3: Cross multiply
    142,599.46x = 214,109.46 × 79,542.78
  4. Step 4: Simplify right side
    142,599.46x = 17,030,861,672.70
  5. Step 5: Solve for x
    x = 17,030,861,672.70/142,599.46
  6. Step 6: Final answer
    x = 119,431.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.